This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A231744 #9 Mar 08 2025 02:00:21 %S A231744 144,6064,784076,71742015,6425495277,598711367728,56006640316980, %T A231744 5220406326242670,486885544941495652,45439583623043602188, %U A231744 4239994977410757148897,395581225544558104634606,36907440894481310915676768,3443519378497211484011972191,321285969990496676187195798327 %N A231744 Number of n X 5 0..3 arrays with no element less than a strict majority of its horizontal and vertical neighbors. %H A231744 R. H. Hardin, <a href="/A231744/b231744.txt">Table of n, a(n) for n = 1..210</a> %e A231744 Some solutions for n=2: %e A231744 ..2..0..0..3..3....0..0..0..3..0....1..1..1..1..1....2..3..2..0..0 %e A231744 ..0..0..0..3..3....0..2..0..0..0....3..1..1..3..1....2..2..2..0..0 %Y A231744 Column 5 of A231746. %K A231744 nonn %O A231744 1,1 %A A231744 _R. H. Hardin_, Nov 13 2013